Process for making type bars



terial.

i impression.

Patented Jan. 29, i929.

are A. .ad ...j

ASSIGNMENTS, To cHocoLar 'roRLER HOLDING ce., scHArFHAUsEN,swrrzER-LAND, a rin-iii.

AirrrENeESRLLsentirai,v or

rRocEss 'roR MAKING-@Yen BARS.'

Application filed October 13, 1923, Serial No. 668,363, and. in Germany'Getoberl7 1922.

This invention relates to tyiebars for typewriting machines-and moreparticularly for line by line writing machines and a proc,- ess forproducing the saine. The invention relates' especially to typebars witha row ol"` existing type patrices is formed and an im` pression is takentherefrom with plastic ina- A typebar is then cast on the said The typesof which therows of types are formed may be of any preferred kind, asfor example cut or struck types, or types produced by a galvanoplasticprocess. In another way the invention may be per- Y formed in thefollowing manner: Any exist-V ing cast or engraved individual matricesare arranged in a row and placed in a mould, in which the typebar iseast by the die casting process. The individual patrices or matrices maybe spaced by individual spacing members or any other preferred spacingmeans.v

The invention is shown for example in the drawing, in which Fig. 1represents a row of matrices spaced apart by wedge-shaped spacingmembers and held together by a suitable holding means, the 'typebarbeing cast upon the matrices and spacing members.

Fig. 2 illustrates a'roiv of type patrices spaced by spacing members andheld together in a suitable manner so as to form a row of patrices fromwhich an impression is taken with plastic *material j Fig. 3 is atransverse section of Fig. 2 on the line A-B, the lower end of the typebeing broken'away.

4 shows a ytop elevation otatypebar 4 .formed on4 a row of matricesFig. 1. y -eferring to thel drawing, 1 in Fig. 1

according to are individual matrices which are spaced has thus beenformed it is placed in a suit-' able mould and a typebar `is caston thesaid row by means of the jet casting process.

lVhen the typebar has thus beencast the top wedge-shaped ends of thespacing incmbers 2 oim notches in the typebar a. The Y notches areadaptd to beengaged by alining means for lining up rowsot types ondiffer-- ent typebars. l

Fig. 2 illustrates in which individual patrices in the form of `types 5and spacing pins or members 6 with trough-shaped tops are employed. The

types 5 with, their spacing members 6 are held together iii 'a row byterminal holding'l members 7. YWhen a row of spaced patrices has thusbeen i'orined, an impression is taken therefrom with plastic material 8,this iir 1.A 'pression then forming a multi-type matrix upon which atypebar, indicated in Fig. 2 in ybroken lines, may be east by the diecasting process. The matrix Smay consist of plas- Vter of Paris,`which,after the impression has beenl formed vin it by the patric'es, may becoated with graphite upon which a thin layer ofV metal is deposited byelectro-deposition. l

I claim: Y f

1. A patriX typebar for typewriting machines comprising a row ofdifferent die cast patriX characters of substantially equal width andwith the top of one character dis-` posed adjacent to the bottom ofanother.

2. A die cast patriX typebar for typcwriting machines comprising a rowyof dit' ing disposed adjacent to the bottomfoi' another. Y

4. The process for-producing typebars for typewriting machines', whichprocess consists in forming a row of different matrix characters ofsubstantially equal width, wherein the top of one character isadjacentto the bottom of another, in providing projections between each twomatrix characters a modified arrangement 5. In the process according` toclaim 4L, the

provision of Wedge-shaped projections whereby wedge-shaped notches areproduced on the character-bearing side of the typebar.

6. The process of iroducing` typebars for typewrtingg` machines, lwhichprocess includes the forming of a row of different ma- Y triX charactersby. arranging diiiierent individual patriX characters in a roW withinterposed spacing means between each ytwo patrix characters, saidspaeing'means forming the said projections, the making` of an signature.

impression of said row of matrix characters in plastic materia, and thecast-ing of a typehar from said impression by the dieeasting process.

7. The process of producing typebars for typcwriting machines, Whichprocess includes the forming of a row of different matrix characters byarranging different individual patrix characters in a row With interposed troughshaped means, the making of an impression of said row ofmatrix characters in piastic material, and thefcasting of a typebar fromsaid impression by the die-casting process. in testimony whereof I haveaHiXed my WERNER SCHFFER.

